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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2006.0451 -- [UNIX/Linux] Memory exhaustion DoS against smbd 17 July 2006 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: samba 3.0.1 to 3.0.22 (inclusive) Publisher: Samba Operating System: UNIX variants (UNIX, Linux, OSX) Impact: Denial of Service Access: Remote/Unauthenticated CVE Names: CVE-2006-3403 Ref: ESB-2006.0249 Revision History: July 17 2006: Corrected CVE number July 11 2006: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ========================================================== == == Subject: Memory exhaustion DoS against smbd == CVE ID#: CAN-2006-1059 == == Versions: Samba Samba 3.0.1 - 3.0.22 (inclusive) == == Summary: smbd may allow internal structures == maintaining state for share connections == to grow unbounded. == ========================================================== =========== Description =========== The smbd daemon maintains internal data structures used track active connections to file and printer shares. In certain circumstances an attacker may be able to continually increase the memory usage of an smbd process by issuing a large number of share connection requests. This defect affects all Samba configurations. ================== Patch Availability ================== A patch for Samba 3.0.1 - 3.0.22 has been posted at http://www.samba.org/samba/security/. Guidelines for securing Samba hosts are listed at http://www.samba.org/docs/server_security.html ======= Credits ======= This security issue discovered during an internal security audit of the Samba source code by the Samba Team. ========================================================== == Our Code, Our Bugs, Our Responsibility. == The Samba Team ========================================================== - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org iD8DBQFEssD8IR7qMdg1EfYRApZgAJ0TgElO/8CofcdUD9U7sbhvEVJdYgCgo41t OtSz6FWliXOQwhwsacXOwN4= =LALn - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 If you believe that your computer system has been compromised or attacked in any way, we encourage you to let us know by completing the secure National IT Incident Reporting Form at: http://www.auscert.org.au/render.html?it=3192 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBRLrnqCh9+71yA2DNAQJHiAQAnqtpOE9iqWgOcmJ5a/9lijYNHld+B3A0 d3EhAe62pTxVXc53pkI7weV4lTK9Uti4bzZkB4AWKbAY4KZAoJcfrdb5h84EC+Jq exI0Fq+lyAAHSro7NThsGMKNtq1oqGxvT1Aks8HbCGU8YqCnR6Py3SxK70NnrkOS BiP+8QnZGZA= =uwdi -----END PGP SIGNATURE-----